mitochondria in single nuclear RNAseq

Question

[Rahul Tyagi]

for snRNAseq, do people use mitochondrial filtering? I'm not sure if this still makes sense even though we are working with data from nuclei rather than whole cells, but I do see some expression of mito genes in my data.

Also, is it preferable to filter the cells based on mito content or to regress it out?